Cyclists are not known for having the most robust of arms. So when the temps go down, it's important to keep them warm. The Nashbar Thermal Arm Warmers make it easy to take the freeze out of your frail upper appendages without resorting to drastic measures like long sleeve jerseys.

Wanted to wear in chilly FL weather. Called to discuss sizing. Assured that if I wear an XL in jerseys and jackets, I would wear an XL in the sleeve. Tops of arm warmers fall down. A L would work but I was given a rather easy, perfunctory "get the recommended size" answer. I should have known better. The cost to return is not worth it. I will try to find someone in our group to use them. Why have customer service reps who don't really seem to try to help the customer in this instance?

They were warm enough but the biceps were FAR too loose. I had to return them. I am no body builder but I'm not a wimp either. They just sat there flapping loosely and would not stay up even with jersey sleeves trying to hold them up. Sorry, had to try something else.

Arm warmer size does not contour to my personal arm length when I ordered a large... They seem to keep the chill out on the areas it covers, but next time I'll guess I'll have to order the next size up to make it fit proper...

We got these for a century ride and loved how they kept us warm during the chilly, windy 100 miles. They didn't fall down and even allowed for a thin, tight, long sleeve base layer. We are both lean. My hubby is 165 lbs 5'9" and wears a medium. I am 5'3 112 lbs and wear a small. We also got the same size in the leg warmers and liked those as well. One note Ladies, the leg warmers won't work as well with a shorter riding short.